19893 strong resistance if price takes resistance here you may see another sideways. crossing above 19893 will provide price a strong upward movementand it may easily reach 19957 and may retest or cross pass 20k.
19815 (Strong Support if takes support here go long and follow levels)
below 19815 it may little week , but 19765 is another strong support you may short below 19815 (Chance of false breakout is high) but you can long from 19765 if it takes support.